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APE1553-1/2(-DS) Hardware Manual
MIL-STD-1553 Bus Front End:
The physical I/O Interface comprises a one/two dual redundant MIL-STD-
1553 stream(s). It consists of the MIL-STD-1553 trapezoidal transceiver
and a respective transformer.
-
The output voltage of the transceiver is programmable (separate for
primary and secondary channel): app. 0V … >21VPP transformer
coupled into 70 OHM.
-
Programmable Bus Coupling options:
- Transformer coupled
- Direct coupled
- Transformer coupled with on-board network emulation
-
Isolated
Time-Tag:
For time tagging, an IRIG-B compatible time code processor is provided.
If no external IRIG-B source is available a time code in IRIG-B format is
generated and can be used to synchronize multiple boards or modules.
Decoder:
Resolution:
1 µs
Width:
1 Year (46 Bit)
Signal Waveform: Amplitude modulated sine wave or square wave
Modulation Ratio: 3:1 to 6:1
Input Amplitude:
0.5Vp-p to 5Vp-p
Input Impedance: > 10k ohm
Coupling:
AC coupled
Time Jitter:
+/- 5µs (depending on the input signal quality)
Lock time:
< 5s
Free wheeling accuracy after 10 Minutes < 1ppm (assuming input
signal accuracy better than 50ppm)
Encoder:
Format:
IRIG B
Absolute Accuracy: +/-25ppm (standard Oscillator)
Signal Waveform: Amplitude modulated sine wave
Output Amplitude: ~ 3 Vp-p, High voltage level
Modulation Ratio: ~ 3.2 : 1
Carrier Frequency: 1kHz +/-50ppm